The students at Blue Ridge Middle School are going on a field trip to the museum. By Friday afternoon 4/5 of the students had turned in their permission slips. What percent of the students had not turned in their permission slips
A.4%
B.20%
C.45%
D.80%
D?

Bos spends 90% of the money he earns each month and saves the rest. What fraction of his earnings does he save each month
A.1/10
B.1/9
C.11/100
D.9/10
D?

Of 10 sandwiches 20% are tuna sandwiches. Express this percentage as a fraction